Bopscrk

+ Improving **case transform logic** (now it respects the case from the original word)
+ Including **new basic case transform operations**
+ Implementing **extensive case transform mode**
+ Fixing typos

+ **Increasing parallelism performance** (real multiprocessing implementation)
+ Better handling of config parser errors
+ Fixing typos

+ **progress bar** implemented and working
+ `version` argument included
+ Docs improved

+ **Relative imports bug fixed**
+ Starting to refactor general structure to allow **progressbar feature inclusion**

+ Fixing project structure to allow properly install via pip:
+ Add MANIFEST to exclude compiled and tests files when building dist
+ Improving structure to properly copy all structure into python packages dir inside a parent dir
+ Fixing relative path to config file
+ Catch exception when a wrong config file was provided (notice and exit)

+ make the installation process easier
+ starting to implement better memory management (cached wordlists writing and reading i/o files), not working yet
+ updating and fixing minor bugs related to dependencies
+ 'exclude from other wordlists' feature removed